How I know that my car use a CAN network?

I can acess the IAW 5NF ECU Although my car use a CAN network with the free version?

Hi, I'm from Brazil... Sorry for my poor English :D I've got a Fiat Palio with a 1.8 engine and his ECU is IAW 5NF, I hope this software work property in my car but I'm not sure. Anyone can tell me if there is a chance to work? I see that this work with a IAW 5nf but is a Doblo 1.6 I think is the sa...